名詞 equation:

1. a mathematical statement that two expressions are equal
2. a state of being essentially equal or equivalent; equally balanced
   同義詞：equality, equivalence, par
3. the act of regarding as equal
   同義詞：equating

1. I can't make this equation come out.
   我不會解這個(gè)方程式。
2. Equality of mass and net electric charge of reacting species on each side of an equation.
   化學(xué)平衡反應(yīng)式兩邊在質(zhì)量或起反應(yīng)的純凈電荷方面的均等
3. What does x represent in this equation?
   這個(gè)方程式中的x代表什麼?
4. The equation of wealth with happiness can be dangerous.
   把財(cái)富與幸福等同起來是很危險(xiǎn)的

e.qua.tion

n.Abbr. eq.（名詞）縮寫 eq.
The act or process of equating or of being equated.
相等：相等或被等同的動作或過程
The state of being equal.
相等的狀態(tài)
Mathematics A statement asserting the equality of two expressions, usually written as a linear array of symbols that are separated into left and right sides and joined by an equal sign.
【數(shù)學(xué)】 等式：一個(gè)表明兩個(gè)表達(dá)相等的陳述，通常寫作一行符號并被等號分為左右兩端
Chemistry A representation of a chemical reaction, usually written as a linear array in which the symbols and quantities of the reactants are separated from those of the products by an equal sign, an arrow, or a set of opposing arrows.
【化學(xué)】 化學(xué)方程式：代表一個(gè)化學(xué)反應(yīng)，通常寫作一行符號，表示反應(yīng)物及其數(shù)量的符號被箭頭或兩個(gè)反方向箭頭同其生成物的表達(dá)式分開
A complex of variable elements or factors:
綜合體：由不同成分和因素組成的綜合體：
例句：
.The world was full of equations . . . there must be an answer for everything, if only you knew how to set forth the questions.(Anne Tyler)
.世界充滿了復(fù)雜的事物；假使你知道如何提出問題的話，那么也許事事就會有答案了.(安妮·泰勒)

【引伸】
equa.tional
adj.（形容詞）
equa.tionally
adv.（副詞）